package Review;

public class Test47 {

	public static void main(String[] args) {
		System.out.println(add(-2, 6));
	}
	public static int add(int num1, int num2){
		int sum =0;
		int carry =0;
		do{
			sum=num1^num2;
			carry=(num1&num2)<<1;
			num1=sum;
			num2=carry;
		}
		while(num2!=0);
		return num1;
	}
}
